Grade 3 AP compression fracture of the pelvis

Case contributed by Dr Ian Bickle


Young male in a RTA. Clinically unstable pelvis. Assess for surgery.

Patient Data

Age: 30 years
Gender: Male

Pelvic binder in situ. The left innominate bone is shifted posteriorly disrupting the pubic symphyisis. There is marked widening of the ipsilateral left sacroiliac joint.

There is a fracture of the left L5 tranverse process. Small volume pelvic free fluid.


Pelvic fracture classification

Illustrations from

Courtesy of Matt Skalski.

Case Discussion

This is a high grade compression fracture of the pelvis from a high energy impact from an RTA.

In the absence of any fractures, one can assume ligamentous injuries have occurred.  The vast strength of the pelvic ring has been compromised.

This is an unstable pelvic fracture.

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Case information

rID: 59189
Published: 28th Mar 2018
Last edited: 14th Aug 2019
Tag: ripas2
Inclusion in quiz mode: Included